A215834 - cp's OEIS frontend

A215834 Fourth derivative of f_n at x=1, where f_n is the n-th of all functions that are representable as x^x^...^x with m>=1 x's and parentheses inserted in all possible ways.

n	a(n)
1	0
2	8
3	52
4	32
5	156
6	100
7	80
8	56
9	344
10	228
11	148
12	172
13	124
14	152
15	104
16	80
17	56
18	640
19	440
20	300
21	324
22	252
23	220
24	172
25	268
26	196
27	148
28	124
29	248
30	176
31	128
32	128
33	104
34	104
35	80
36	56
37	56
38	1068
39	760
40	536
41	372
42	560
43	464
44	396
45	324
46	292
47	244
48	196
49	444
50	348
51	276
52	252
53	316
54	244

[0, 8, 52, 32, 156, 100, 80, 56, 344, 228, 148, 172, 124, 152, 104, 80, 56, 640, 440, 300, 324, 252, 220, 172, 268, 196, 148, 124, 248, 176, 128, 128, 104, 104, 80, 56, 56, 1068, 760, 536, 372, 560, 464, 396, 324, 292, 244, 196, 444, 348, 276, 252, 316, 244]

cp's OEIS Frontend

A215834 Fourth derivative of f_n at x=1, where f_n is the n-th of all functions that are representable as x^x^...^x with m>=1 x's and parentheses inserted in all possible ways.

Table of values

List of values